Cowl and ventilator.



f @Vi h1 moza Nm 834,551. v P ATENTED'CT. 30, 1906.

H. V. ACKBRT'. GOWL AND VENTILATOR.

APPLICATION FILED MAY 24, 190.6.

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attorney PATENTEDOCT 30, 1906.

H, v. ACKERT. CowL AND vENTIL-ATOR. APPLICATION TILED HAY24,1906.

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31400 [LOZ mr Nour.: pr'rxns co., wqsumarok: nrc.

` among others,

vention will proved cowl or ventilator v as the vertical tube,

while -the horizontal tube. alsoterminates unirsi) srArEs PATENTtorsion.

HAROLD v.- Acknnr', or ROCHESTER, Naw YORK.

cowl'. AND VENT|LATOR Specification of Letters, Patent.

' Application nea may 24, i906. semi Np. 318.542.

Patented Oct. 30, 1906-.

To otZZ whom/t may concern;

Be it known that I, HAROLD V. Aoxnnr, of Rochester, in the countyofMonroe and Stateof New fYork, have invented a new and useful Improvementin Cowls and Ventilators, which improvement is fully set forth in thefollowing specification' and shown in the accompanying drawings. Thisinvention relates to certain new and useful improvements Vin chimneycowls or ventilators of that class designed to be. placed uponthe top ofya chimney for accelerating the draft and it has forits objects, toprovide an improved evice of this general character having means forcondensingthe wind, so as to cause it to increaseits velocity andproduce an accelerateddraft upward through the chimney.

The ventilator com rises a vertically-disposed flue adapted to bearranged concentric with the upper portion of the chimney flue orpassage and rotatable about the same anda horizontal tube of the samediameter the said two tubes form- Outside of the horizontal tube is aconcentric band terminating in funnels,

with theI cowl removed.

Like numerals parts throughout Referring to of reference indicate likethe several views. the drawings, 1 designates which theventilator isdesigned to b e supported.

2 designates a spindle upon which y the cowl is designed to revolve.This spindle is carried by the forked support 3, which is secured to themember 1, and its upper `end is preferably pointed, as shown, for anobvious purpose.

The cowl or ventilator is constructed as follows: 4 is avertically-disposed tube of greater diameter than that of the flue 1 anddisposed concentric therewith, so as to leave a passage 5 therearound,as seen clearly in Figs. 2 and 3. yThis vertical tube may be of anydesired heigh ,but not necessarily so as to extend. a reat distanceabove the upper end of said u e.

At the upper end of thetube 4 is the hori` zontally-disposed tube 6,which is of substantially the same diameter as the said tube 4, butextending at as seen best in Fig. 3. This horizontal tube is practicallyshort andvextends in .both directions from thetube ,4. At one end itterminates in the funnel or .flared mouth .7, as seen best in Fig". 3,while at the other end it has secured theretor the flared mouth orfunnel 8 of the inner tube 9 l concentric therewith, the said funnelextended beyond the end. of the tube 6 and enlarged to an extent greaterthan the diameter of the tube 6, all as seen clearly in Fi 3. o

The spindTe 2 passes through the tube 9, as shown, and its upper end ispointed, as seen at 10, having a bearing on the plate 11, secured to theinner face of the upper portion or walll of the tube 6., while upon theunder side of the tube 9 is a similar plate through which the saidspindle also passes. These lates 11 and 12 prevent wear on the tubes,and the upper one serves to keep the end of funnels, the latter being anarrow rim within the funnel of the said band. The other fun-'g nel ofthe horizontal tube is provided with a' horizontal tube concentricallywithin the said horizontal tube. The upper portion revolveson alvertical spindle coaxial with the chimney Hue or passage and supportedthereon. Means are provided for giving a broad bearing for the bearingsof the spindle to prevent wear.` The funnels and the flaring portionssoon to `be described serve to condense the wind at the front end of theventilator where the wind enters, and slightly rarefy it where it passesout at the funnel as it leaves the device.

Other objects and advantages of the inhereinafter appear, and the novelfeatures thereof will be specifically defined b`y\the appended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the nuthe spindle from wearing a hole through the merals ofreference\ marked thereon, form a upper wall of the tube 6^. part ofthis specification, and in which- It will be noticed that there is apassage perspective view of my i in position. Fig.

Figure 1 is a for the air through the space between the tubes 6 and 9,as indicated by the arrow, lthis 2 is a substantially central verticalsection space being open at one end, but closed at .the through thesame. Fig. 3 is a vertical secother, 13, which closure is formed by theintion at right angles to Fig. 2. Fig. 4 is a clined portion of thefunnel 8.`

the upper portion of a chimney or a flue upon right angles thereto,

perspective view of'the supporting-spindle IOO 14 is a funnel whichembraces the funnel 7, without departing from the spirit of theinextending back of the latter, as seen at 15, vention or sacrificingany of its advantages. eaving a space 16 between the same, and What isclaimed as new is this funnel is extended at its upper half to a 1. In aventilator, concentric members 55 v with oppositelyisposed fiaring endporas s own, where it terminates in a funnel 17, tions, with means forcondensing the wind at which extends, however, for only that portheentrance and for rarefying it at its disseen in Figs. 1 and 3. Thusthere is a pas- 2.bIn a ventilator, concentric members 0o ro sage fromfront to rear between the tube 6 with flaring portions atopposite endsofthe and the .funnel 14 and the funnel 17, which ventilator, meanswithin one end for con in Figs. 1 and 2. The rear portion of this siteend for rarefying the air and enhancing bottom wall 18 flares outward,as seen at 19. an upward draft through the ffue. 65 'i 5 e passage 20,above referred to, is segmen- 3. In a ventilator, concentric members talin shape, as seen clearly in Fig. 2. with oppositely-disposed funnels atthe ends,

21' is a vane secured to the upper part of the annular space around theinner tube bethe funnel 14 for keeping the device in the ing closed atone end, and a flange at the opright position with reference to the windand posite end of greater diameter than the space 7o 2o allowing it tobe easily turned on the spindle between adjacent members as and for theas a vertical pivot by the wind. purpose specified.

he parts may be formed of galvanized 4. In aventilator, an inner tubewith open iron or any other material suited to the purends, an outertube concentric therewith, a pose. The diameter and other dimensionsfunnel on one end of the inner tube closing 75 25 of the device may bevaried according to the the end ofthe outer tube, a funnel on tlie opuseto which the ventilator or cowl is to be posite end of the outer tube, avertical tube put and the size ofthe flue in connection with supportingthe outer tube, and a member which it is to be employed. having a funnelextended beyond the end of In use the device is placed upon the upperthe funnel ofthe outer tube. 8o 3o end of the chimney or flue, as shownin Figs. 5. In a ventilator, an inner tube, an outer l, 2, and 3, fireeto rotate upon the spindle as tube, funnels at opposite ends of theinner a pivot. The funnels 8 and 17 act to conl and outer tubes, avertical tube sup )orting dense the wind, so to speak, causing it tointhe outer tube, and means at one en of the crease its velocity throughthe tube 9 and the ventilator for condensing vthe wind at that 8 5 3 5passage 20, resulting vin an accelerated draft l end and means forrarefying the wind at the tube 9 and between the same and the tube 6 6.In a ventilator, inner and outer concenaround the discharge end of thetube 9. tric tubes, tunnels at opposite ends thereof, a

e conical flange 7 has its largest diameter vertical tube communicatingwith the space 9o 40 just a little larger than the diameter of thebetween said tubes, a member inclosing the annular portion connectingthe unnels 14 outer tube and having funnels at opposite and 17, so thatit covers the annular space beends, one of which extends for a portiononly tween the said annular portion and the tube of the circumferenceofthe outer tube.

6. By t 's means the wind coming through In witness whereof I havehereunto set my 95 v.45 said annular space is deflected by the saidhand, this 21st day of May, 1906, in the presilange 7, tending to causea slight vacuum, or `ence of two subscribing witnesses.

rather a rarefaction of the air, around the annular discharge-openingbetween the tubes HAROLD V' ACKERT 6 and '9, thus also enhancing theupward Witnesses: 5o vvdraft through the Hue 1. E. B. WHITMORE,

odifications in detail may be resorted to A. M. WHITMORE.

